Giant dog breeds: the honest guide
24 giant breeds — the dogs that stop traffic, fill sofas, and come with food bills that make you reconsider life choices.
The real cost of a giant breed
Giant breeds. Broadly defined as dogs that exceed 50 kg at adult weight. Are a different category of ownership. Not harder, necessarily, but different in ways that catch people off guard. The most important thing to understand upfront is lifespan. Most giant breeds live 7–10 years. Great Danes and Irish Wolfhounds often average 6–8 years. You will likely lose a giant breed dog while it's still relatively young. That's not a reason to avoid them. Owners who've had one often describe the experience as among the most rewarding of their lives. But it's a reality worth sitting with before you buy a puppy.
Food costs are significant. A Great Dane or English Mastiff can eat 4–6 kg of quality dry food per week. Over a year, that's a meaningful monthly outgoing. Quality matters more here than with smaller breeds: giant breeds are predisposed to specific skeletal and joint problems, and diet during the growth phase (which lasts 18–24 months, longer than in smaller dogs) plays a direct role in outcomes. Cheap food is a false economy with a Great Dane.
Veterinary costs scale with body weight across the board. Anaesthesia, medications, painkillers, and any surgery cost more for a 70 kg dog than a 30 kg one. Pet insurance for a giant breed runs considerably higher too: £80–£150 per month for reasonable lifetime cover on a Great Dane or Leonberger is common in the UK. Some insurers impose sub-limits on giant breeds or decline to quote at standard rates. Factor this into the total cost of ownership before you buy.
One of the less-discussed practical problems is care cover. Giant breeds are difficult to board. Many kennels charge a significant premium. Double or more compared to a medium dog. And some refuse them outright due to limited run space. Finding a house-sitter or dog-carer who is comfortable handling a 70 kg animal is hard. If you travel for work or take regular holidays, this needs a concrete plan before you acquire a giant breed, not after.
The assumption that giant breeds need vast houses and gardens is mostly wrong. Many are surprisingly calm and compact indoors. A Great Dane will choose a sofa corner and sleep on it all day. What they do need is a vehicle large enough to transport them safely, secure fencing that's high enough (Irish Wolfhounds can clear a standard garden fence), and flooring that handles the weight and claws. Slippery floors in older UK homes are a genuine hazard for giant breeds and a contributor to joint problems.
Giant breed puppies must not be over-exercised before skeletal maturity, which arrives later than in smaller dogs. Typically 18–24 months. Excessive impact during the growth phase causes lasting joint damage that will surface years later. Short, varied, low-impact activity is correct for giant puppies. The long walks come later.
All giant breeds
24 giant breeds sorted by maximum weight
8–10yr · £70–150/mo ins.
6–10yr · £70–150/mo ins.
8–12yr · £75–160/mo ins.
7–10yr · £60–130/mo ins.
9–11yr · £80–170/mo ins.
8–12yr · £70–160/mo ins.
10–12yr · £65–140/mo ins.
8–12yr · £65–140/mo ins.
8–9yr · £70–150/mo ins.
10–12yr · £75–160/mo ins.
10–14yr · £80–160/mo ins.
8–10yr · £65–140/mo ins.
6–8yr · £70–150/mo ins.
7–9yr · £75–160/mo ins.
12–14yr · £65–140/mo ins.
12–15yr · £70–150/mo ins.
8–12yr · £70–150/mo ins.
11–13yr · £65–140/mo ins.
8–11yr · £70–150/mo ins.
10–12yr · £70–150/mo ins.
10–12yr · £60–130/mo ins.
10–12yr · £60–130/mo ins.
7–10yr · £60–130/mo ins.
8–11yr · £60–130/mo ins.